| Domestic Company | ||
| HOKKAIDO | GEPRO | |
| IWASAKI | ||
| ELECTRONICS GIKEN | ||
| IWATE | NARISHO | |
| NIIGATA | YOSHIYA | |
| KANAI | ||
| NAGANO | ITOH | |
| NAGOYA | SANKO Co., Ltd. | |
| KONDO INSTRUMENTS | ||
| SHIKOKU | DAISOKU Co., Ltd. | |
| KYUSHU | MARUTANI SHIKO, Ltd. | |
| OKINAWA | BUNNKYO KAGAKUKIKI | |
| Overseas Company | ||
| KOREA | DONG AH TESTING MACHINE | |
| CHINA | BEIJING BRILLIANT SUN TECHNOLOGY CO., LTD. | |
| INDIA | HEICO | |
| ISLAMIC REPUBLIC OF IRAN | PARDISAN SOIL STRUCTURE | |
| TURKEY | BESMAK | |
| NORWAY | GEONOR A/S | |
| AUSTRALIA | ICT INTERNATIONAL PTY LTD | |